private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
SqlConnection MeinConnection = Mein.CreateConnection((string)comboBox1.SelectedItem);
MeinConnection.Open();
SqlDataAdapter sqlDataAdapter = new SqlDataAdapter();
for (int i = 0; i < dataSet.Tables.Count; i++)
{
sqlDataAdapter = new SqlDataAdapter($"SELECT * FROM {dataSet.Tables[i].TableName}", MeinConnection);
sqlDataAdapter.Fill(dataSet.Tables[i]);
}
dataGridView1.DataSource = dataSet.Tables[comboBox2.SelectedIndex];
}
//public string serverName;
public Form1()
{
InitializeComponent();
SqlConnection MeinConnection = Mein.CreateConnection("master");
MeinConnection.Open();
SqlDataAdapter sqlDataAdapter = new SqlDataAdapter();
SqlCommand sqlCommand = new SqlCommand();
SqlDataReader sqlDataReader;
#region Не валидное имя сервера
//sqlCommand = new SqlCommand($"SELECT @@servername", MeinConnection);
//sqlDataReader = sqlCommand.ExecuteReader();
//while (sqlDataReader.Read())
//{
// serverName = (string)sqlDataReader.GetValue(0);
// Console.WriteLine(serverName);
//}
//sqlCommand.Cancel();
//sqlDataReader.Close();
#endregion
//Вывод всех таблиц в dataGridView
sqlDataAdapter = new SqlDataAdapter("EXEC sp_helpdb", MeinConnection);
//sqlDataAdapter = new SqlDataAdapter($"EXEC sp_Databases", MeinConnection);
DataTable table = new DataTable();
sqlDataAdapter.Fill(table);
dataGridView1.DataSource = table;
Console.WriteLine(MeinConnection.Database);
label1.Text = MeinConnection.Database;
sqlCommand = new SqlCommand("EXEC sp_helpdb", MeinConnection);
sqlDataReader = sqlCommand.ExecuteReader();
while (sqlDataReader.Read())
{
comboBox1.Items.Add(sqlDataReader.GetValue(0));
}
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
comboBox2.Items.Clear();
comboBox2.Text = "";
dataSet.Tables.Clear();
SqlConnection MeinConnection = Mein.CreateConnection((string)comboBox1.SelectedItem);
MeinConnection.Open();
SqlCommand sqlCommand = new SqlCommand();
SqlDataReader sqlDataReader;
sqlCommand = new SqlCommand($"SELECT TABLE_NAME FROM {comboBox1.SelectedItem}.INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE'", MeinConnection);
sqlDataReader = sqlCommand.ExecuteReader();
while (sqlDataReader.Read())
{
comboBox2.Items.Add(sqlDataReader.GetValue(0));
dataSet.Tables.Add((string)sqlDataReader.GetValue(0));
}
sqlCommand.Cancel();
sqlDataReader.Close();
}
public Form1()
{
InitializeComponent();
SqlConnection MeinConnection = Mein.CreateConnection();
MeinConnection.Open();
Mein.CreateTable("Students", dataSet);
Mein.CreateTable("Specials", dataSet);
DataTable Students = dataSet.Tables[0],
Specials = dataSet.Tables[1];
dataGridView1.DataSource = Students;
dataGridView2.DataSource = Specials;
dataSet.Relations.Add("Specials_Students", Specials.Columns[0], Students.Columns[4]);
Students.PrimaryKey = new DataColumn[] { Students.Columns[0] };
Specials.PrimaryKey = new DataColumn[] { Specials.Columns[0] };
ForeignKeyConstraint Key = new ForeignKeyConstraint(Specials.Columns[0], Students.Columns[4]);
Key.DeleteRule = Rule.Cascade;
#region Добавление записей
//SqlCommand MeineStudent = new SqlCommand();
//MeineStudent = new SqlCommand("DELETE FROM Students", MeinConnection);
//MeineStudent.ExecuteNonQuery();
//string[] data = new string[5]
//{
//"INSERT INTO Students (Id, Name, Surname, Phone, Id_Special) Values ('1','" + CreateName() + "','" + CreateName() + "','" + CreatePhone() + "','" + CreateSpecials() + "')",
//"INSERT INTO Students (Id, Name, Surname, Phone, Id_Special) Values ('2','" + CreateName() + "','" + CreateName() + "','" + CreatePhone() + "','" + CreateSpecials() + "')",
//"INSERT INTO Students (Id, Name, Surname, Phone, Id_Special) Values ('3','" + CreateName() + "','" + CreateName() + "','" + CreatePhone() + "','" + CreateSpecials() + "')",
//"INSERT INTO Students (Id, Name, Surname, Phone, Id_Special) Values ('4','" + CreateName() + "','" + CreateName() + "','" + CreatePhone() + "','" + CreateSpecials() + "')",
//"INSERT INTO Students (Id, Name, Surname, Phone, Id_Special) Values ('5','" + CreateName() + "','" + CreateName() + "','" + CreatePhone() + "','" + CreateSpecials() + "')"
//};
//foreach (var a in data)
//{
// MeineStudent = new SqlCommand(a, MeinConnection);
// MeineStudent.ExecuteNonQuery();
//}
//MeineStudent = new SqlCommand("DELETE FROM Specials", MeinConnection);
//MeineStudent.ExecuteNonQuery();
//string[] dataa = new string[4]
//{
//"INSERT INTO Specials (Id, Depatment, Special) Values ('1','Programming','PO')",
//"INSERT INTO Specials (Id, Depatment, Special) Values ('2','Technical','ATP')",
//"INSERT INTO Specials (Id, Depatment, Special) Values ('3','Economy','BU')",
//"INSERT INTO Specials (Id, Depatment, Special) Values ('4','Programming','PI')"
//};
//foreach (var a in dataa)
//{
// MeineStudent = new SqlCommand(a, MeinConnection);
// MeineStudent.ExecuteNonQuery();
//}
#endregion
//dataSet.WriteXmlSchema(@"C:\Users\right\Documents\Visual Studio 2017\Projects\Mein_1\XML\Schema.xml");
//dataSet.WriteXml(@"C:\Users\right\Documents\Visual Studio 2017\Projects\Mein_1\XML\Data.xml");
}
